Type-writing machine.



H. W. DAVIS.

TYPE WRITING MACHINE.

APPLICATION min mnu. 190s.

uw nro z Pllntd Oct. 5, 1915.

z SHEETS -SHEU 2 IXJ'stMQ/owo thereto Fig.

HORAC W. DAVIS. OF SHARON, PENNSYLVANIA.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application filed April 24. 1908. f 4Serial N o. 429.333. f

To all wwm'z't may concern:

Be it known that l, Houses W. Davis.y a citizen of the 'United States, residing at Sharon, in thecounty of Mercer and State of Pennsylvania, have invented certain new' and useful improvements in Type-Vv'riting Machines, of'which the following is a specification.

This invention pertains to improvements in typewritingr machines and is directed especially to those paper feedingr means by ywhich the paper is held against the face of the platen after leaving;r the control of the feed rolls proper. In the greater number of machines now on the market, the paper finger, to whatever place it has been manually adjusted, will be struck by the type when; during the travel of the carriage from right to left, the paper, finger assumes thel position of the printing point. In some machines this defect has been overcome byy slidably mrninting4 the paper finger on the carriage rod and providing a. projection on the machine frame at the printing point, or to .the rightthereof. Upon `coming in contact with the projection, the paper finger is held by it and. is prevented from covering the printing point in the continued travel of the carriage. The latter method is, however, objectionable as continual readjustment of the paper finger isnecessary.

To overcome the above cited objectionable features of Ypaper fingers at present in use. l provide a paper finger bothl slidable and rotatable, sti-.that during the travel' of the carriage when the paper finger approaches the printingy point the projection will swing the paper finger to one side without disturbing its slidable support. and after the paper finger passes the printing point the finger `will be automatically returned to normal poition.

Other objects and purposes of my invention will appear from an inspection of the drawing, the specification describing the same and the claims appended thereto, in which are set forth the features of construction. coi'nbinations of elements and arrangements of parts properly comprised within the scope of the same.

lu the drawings, wherein are shown several of the possible embodiments of my in vention, Figure 1 is a front View of a visible` front strike typewriter (irrelevant parts being omitted) with my invention applied 9. is a erlosssretional view taken on line Y-Y of'Fig. 1; Fig. 3 is a perspective view of the slide block on a larger scale than that shown in Fig. 1; Fig. l shows a modification of my invention adapted to a top strike typewriter; F ig. 5 is a cross sectional view taken on the line Z-Z of Fig. l; Fig. 6 is a perspective View of the paper finger shown in Fig. 4,-on an enlarged scale; Fig. 7shows a further modification of my invention as applied in Fig. 1, the finger in this figure being mounted between the slide block and the platen; Fig. 8 is a cross-sectional view, on an enlarged scale, of the paper finger, taken on line X-X of Fig. 1." l

Referring to the several figures, in which like reference characters designate like parts, 1 represents the platen frame, carried by a carriage, irrelevant portions of which are omitted from the drawing, 2 the platen axle, and 3 the platen of typewriting machine. ln Figs. 1 and 2, 4 is the platen rod extending along the front of the platen, and having its bearings rotatably mounted in the forwardly extending ends of the platen frame 1. Exteriorly of the frame, the rod is provided with a finger piece 5, secured to it by means of the screw 5', by means of' which the rod may be rotated to move the paper fingers away from. the platen. A spring (not shown) is employed to retain the tensioning of the paper fingers against the platen. The rod 4- is provided with-a longitudinal groove 4 upon which the blocks (i, provided with feather G', are splinerh The paper finger 9 is. pivotally secured to the block (3 by means of screw 7, screwed into threaded opening`l 7. The paper finger proper is stamped from a sheet of thin resilient metal and is provided with a beveled head and sides 9, whereby the finger may be rotated on its bearing or otherwise move over the paper with the least possible resistance. The tail of the paper finger is turned inwardly at 15 to form an ear, and between said ear and pivotal point 7 is an inwardly extending projection 8, adapted to normally rest in a corresponding depression S in the block 6, whereby the paper finger is' steadied in its normally erect position. The tongue'll is stamped'from the paper finger and bent ou its lower edge in the direction of the block and to a position substantially parallel to the ear l5. Seid tongue 11 is provided with a. perforation through which an upright spring 1Q,

valways directly in line with the printing point. Y

From the. foregoing description it will be seens that l have provided a paper finger which will not be rstruck by the type in Yprinting and which, when once adjusted,

need not b`e readjusted after it has been rotated by the projection on the machine frame. l

In operation my invention will work as follows: The paper finger or lingers are adjusted to any position on the rod l where they will control the sheet of paper being written upon. It must be'understood that n nger may be placed directly in the cen ter of the line of print if desired. Upon the carriage feeding toward the left in letter spacing, the paper finger approaches the printing point, where, in -the ordinary construction, it would be struck by the type. In the form shown in Figs. 1 and 2, however. the ear 15 is met by the projection 13. causing the paper finger to rotate on its pivot T, past the printing point. On the next printing or letter space the tail of the paper finger is flexed outwardly by the ear riding up on the cam face of the projection. As the. carriage continues in letter spacing the ear 15 passes from the control of the cam 13, and the finger is returned under the impulse of the spring 12 to its normally erect position. On the return of the cariage to begin a newline, the paper finger is rotated in the opposite direction.

The reason' for turning the ear 15 inwardly. as shown in Figs. 1 and 2, is to allow, the projection 13 to lie in the Same plane as that in which the platen shifts,Y so that the paper finger will be operative in either the upper or lower case.

Modifications of Figs. 1 and 2 are operative upon the same principle as that set forth, and it must be understood that I am not limiting myself to any specific construction, but am claiming broadly the principle of a paper finger adapted to avoid being struck by the type as it approaches the printing point, without changing the location of the paper finger relative to the platen. Y

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is;

1. In a typewriting machine having a carriage, a paper finger rotatable in the direc tion of the carriage feed and means f'or ro/ tating the paper finger in such direction. substantially as shown and described.

2. In a typewriting machine having a rotatable platen. the crunbination of' a paper finger and means for automatically rotating the paper finger in a plane parallel to the platen axle. substantially as shown and de srribed.

Il. In a typen riting machine haringr a carriage. a paper finger and means fixed to the machine frame for rotating the paper finger during the travel of the carriage, substan tially as shown and described.

l. A tvpewriting machine having a Cailriage. a nrachine base. a paper finger. stationary means for moving said paper finger Vrelative to the carriage. and machine base during the travel of the. carriage.

5. In a typewritinsrmachine. the combina.n tion of a paper linger slidablc and rotatable in the same plane` and means for rotating the paper finger. substantially as shown and described.

l(i. In a typewriting machine haring' a platen carriage. the combinaton of a paper finger and means mounted on the machine base for rotating the paper finger din-ing the trayel of the platen carriage, substan tially as shown and described.

7. In a typewritinar machine having a car` riage, the combination of a paper finger slidable and rotatable in the direction of the carriage feed and means for automatically rotating said finger in said direction, substantially as shown and described.

8. In a typewriting machine. the combina tion of a. paper finger having its aXis of rotation at substantially right angles to the face of the finger and means for rotating the finger.` substantially as shown and described.

9. In a typewriting machine having a carriage. the combination of a paper finger, stationary means for swinging the paper finger in one direction duringr the traveLo the carriage and secondary means for swinging the paper finger back to its normal position. substantially as shown and de scribed.

10. In a typewriting machine. the combination of a. `paper finger. means for automatically swinging the paper finger and other means for returning the paper finger to normalposition. substantially as Ashown and described.

11. In a typewriting machine having a carriage having a shiftable, traveling` platen. the combination of a paper finger and S`tationary means for rotating the paper finger during the travel of the platen while the platen is in either upper or lower position. substantially as shown and described.

12. In' a typewriting machine having a platen frame, the combination of a paper finger rotatably mounted on the platen frame. and means for automatically rotatsaid paper linger during the travel of the platen trame, said means being opera tire while the platen frame is in either the Upper or lower case position. substantially as shown and described.

Sil. in a typewriting machine, the combination of a block, a thin resilient paper linger pivoted on said block. means carried b v the ma ch ine frame for moving said paper finger in one direction and means carried b v the block for moving the taper finger in the opposite direction.. substantially as shown and described.

Li. ln a typewriting machine having a carriage. the combination of a block, a paper finger pivoted on' said block, a member operative upon the travel of the carriage for rotating the pa per finger in one direct-ion and a second member adapted to rotate the paper finger in the opposite direction.v substantialljv as shown and described.

l5. In a typewriting machine havinga carriage, the combination of a paper finger. said finger crossing the line ot' print. and stationary means for rotating the paper finger when it approaches the printing point. snlfstantmllv as shown and described.

lo a typewriting machine. thc coinbination of a block. a paper? finger mounted on the block. means mounted on the machine frame for rotating the paper finger alternately in two ditferei'it directions, means mounted on the block tonretnrning the paper finger to normal position after said n- Q'ir has passed bevond the control of the iii-st named means. and means for assistingI in retaining the paper .finger in normal posi tion. wibstantiallv as shown ,qnd described.

ll. in a tvpeivriting machine having a carriage. the combination ot a paper finger h crosses the line of print and means.

said paper finger during the feed ri lage. for rotating the finger as it y the printing point. snbstantiallv ed .lescribvd.

tvpewriting machine having a cf'inibiirition of a paper finger .a lie line of print. means fixed bine trame for rotating said tin- "1 :ippwsiches the printing point and or rotating' said lnger to normal non after it has passed the. printing int. siibstantialivv Shown and described.

l5?. .in a tvpenriting machine having a carriage. the l"onibination of a paper' finger which crfrwsw the iiinI of print. means fixed to tip' machine frame for moving the paper finger in one direction as it approaches the printing? point and means for moving the paper finder in he opposite direction as it leaves the plint1^ :j point. snbstantiallv as shown and described.

20. l'n a typciviiting; oro-hipo Tha-fing a carriage. the combinatifiin of a paper finger made of thin resilient. metal. said linger be-f ing pivotall)7 mounted on the carriage. and

p'rin'iaijv and secondary means for maia i ing said inger in normal position. means coacting between the finger and the,

pivotal snifport. 'mibstantally as .shown and described.

21. In a tvpewriting machine having a carriage, the combination oi' a paper finger of thin resilient metal. said finger being pivotaliy mounted on the carriage. means fixed to the machine trarne for rotatingv the finger. and spring means opposingr said first named means. snbstantialljf': s shown and described.

22. In a typewriting machine having a carriage, the combination of a paper finger, said finger crossing the, line of print, and means for automatically rotating the paper A finger when it approaches the printing point. substantially as shown and described.

23.' In a typewriting machine having a carriage, the combination of a paper linger which crosses the line of print, means for autornaticallyr rotating said finger as it ap`l preaches the printing point. and means for rotating Said paperl finger back to normal position after it has crossed the printing point. substantiall) as shown and described.

Q4. In a t \fpewriting machine having a carriage, the combination of a paper finger which crosses the line of print. means for automatically moving the paper linger in one direction as it approaches the printing point and means for moving the paper finger in the opposite direction as it leaves the printing point. substantially Shown and described.

ln a typewriting machine having a carriage. the combination of a. paper finger pivotallv mounted on the carriage, spring means for maintaining the paper finger in a normal erect position, a projection fixed to the machine trame adjacent to the printing point. and an elongation on said parber finger adapted to contact with said projection and canse the. paper finger to rotate in opposition to the spring' means. substantially as shown and described.

2". ln a` tvpeivriting machine having a carriage. the combination of a peper finger and means for automatically rotating said finger as it approaches the printing point during the feed of the platen carriagel substantially as shown and described.

27. ln a tvpewriting machine. the combination ot' printing instrmnentalities, a paper feeding device that crosses the printing line and travels past the printing point. and means acting on said iiapenteeding device for preventing the printing instrumentalil ties from striking the same.

28. 'In a tvpewriting machine. the combination ot' printing instrnmcntalities, a paper feed device that crosses the printing line,

and means for compelling the paper feed device to move past the printing point before a printing instrumentality can strike it.

29. In a typewriting machine, the combil nation of a platen, a plurality of paper tingers cooperative with the platen and movable therewith and each mounted for movement relatively thereto, and means coperati ve with said paper lingers for moving each of them individually past the printing point independently and by a movement of each of said fingers relatively to the platen.

ISO. In a tvpewriting machine, the combination of a carriage, a paper .feed device ca'rried thereby, and means for moving said paper feed device past the printing point by a movement of the paper feed device relatively to the carriage, said means being carried in part by the carriage and in part by the frame of the machine.

31. In a typewriting machine, the combination o a carriage, a paper feed device carried thereby, and means Yfor moving said paper feed device past the printing point by a movement of the. papeefeed device relatively to the carriage, Said means being carried in part b v the carriage and in part by the frame of the machine` said means being operated by the travel ot the Carriage.

32, In a typewriting machine`r the combination of a ca: a ried by the carri; printing point3 e' paper feed device. i than the carri-y the printing: per

33. In a r'ypeivi wir nation of a ew point, and ins ,im device is caused to e and to clem' the 'pmb o? g mentalities dni-ii i i' successive primi1 ing instrumentali 34. In a typ i eminem the zombi nation of a ear .5, peper eontroiilng device which carried in' he and lengt 'imht :ntzhg ihtru between tno the pri ntcrosses the printing 5in( nfl; means vvhere- 50 by said paper from v. J .s clawed to move across the p' n @man @groin en nnprmted portion o" 2, o a printed kpor tion thereof. In testlmonv r-Jiereo' l :ilnv: mv siffna- '59 ture in the present;v et" tivo vvitneeeee.

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